A Precise Automatic pH Monitor, Transmitter, & Logger Built On A Decade Of Proven Technology
AgrowDose™ PHX monitoring systems are autonomous pH set-point systems consisting of a digital PHX hydroponics controller and temperature, pH, and optional ORP or DO probes. Precision sensors and rugged pumps offer reliable and accurate control of reservoirs large and small.
Ideal for applications such as aquarium and aquaponics, pool & spa or industrial/commercial chemical process monitoring and control. The bright LCD display and 3-button interface make this unit capable of operating stand-alone for sensor monitoring, alerts, dosing pump control and more. Precision digital electronics with isolated probe inputs accurately read and record sensor data.
Internal memory logs 21,600 data points per sensor for months or years of storage. Accurate real-time-clock with battery backup keeps log time accurate during power outages.
Combine the PXH controller and an AgrowDose ADi pump to form a powerful and economical automatic MPX dosing system. Operate up to a 4-part dosing pump and store multiple recipes for easy change-over. Learn More here!
Included With The Mini Dosing System:
- GrowControl PHX Controller
- pH, and temperature sensors
- OPTIONAL: ORP Sensor
The PHX can be paired with the GrowControl GCX Cultivation Control System for ultimate control of your growing operation. When paired with the GrowControl GCX Controller, you not only gain the ability to control all aspects of your facilitie's climate and hydroponics systems, you gain the option to run your PHX pH system from the comfort of your home with remote access capabilies. Potential problems and issues are sent to you at an instant via text or email too, so you never have to worry!
Agrowtek also offers an easy solution for firmware updates and data logging, using the Agrowtek LX1 AgrowLink. When using the LX1, you can hook your MPX system up to your pc for even more control. Learn more here.
To make sure you set your system up how you truly like and not just how you can get it, Agrowtek systems use standard MODBUS protocols and can be controlled by MODBUS devises using Agrowtek's LX2 ModLink. Learn More Here!

The GrowControl PHX Controller
- 3-button/LCD display interface allows easy monitoring of sensor values.
- High / Low History
- Graphing
- Main Menu
- Alarm set points with Buzzer
- Manual pump priming
- Back-light shut-off timer
- Simple menu driven setup for configuring pump recipes, system settings, sensor calibration and more.
- The main screen displays the real-time sensor readings from the attached sensors.

Agrowtek Sensors & Probes
Temperature Probe
- -20 to 60°C
- 3 ft
- Tinned Lead Connection
- Included with PHX System
Stainless steel probe, 1/4" diameter x 3" with 3ft lead. Made in USA

pH Probe
- 0-14 pH
- 3 ft
- BNC Connection
- Included with PHX System
High quality pH sensor probe for PHX transmitters. Made in USA.

Oxidation Reduction Potential (ORP) Probe
- -1000 to +1000 mV
- 3 ft
- BNC Connection
- Optional Upgrade for PHX System (can't be used with DO Probe on PHX system)
High quality ORP (Redox) sensor probe for GXH transmitters. Made in USA

Dissolved Oxygen (DO) Probe
- 0 - 20 mg/L
- 3 ft
- BNC Connection
- Optional Upgrade for PHX System (can't be used with ORP Probe on PHX system)
High quality galvanic DO sensor probe. Made in USA.

Sensor Set Up & Usage
Connecting Your Sensor Probes To The PHX Controller
pH & ORP sensors are equipped with “BNC” style connectors; push on and then turn to lock in place.
Temperature probes have a screw terminal block. Make the connections according to the label on the transmitter. The terminal block may be removed for easier wire installation or for service.

Sensors Require Continuous Contact
PHX systems require the sensors to be continuously in contact with the water in order to properly manage the dosing pumps. Probe can be located in the reservoir tank, or may be installed inline with a continuously recirculating water flow.
pH & ORP probes must remain wet to avoid damage. Do not allow probe tips to dry!
** Manifold shown sold separately, unless mounting panel option is selected **

Sensor Specifications
Specification | Measurement |
---|---|
Power | 12-24Vdc, 5w |
Max Cable Distance | 1000ft |
Temperature Range | -20 - 60°C |
Temperature Accuracy | ±2°C, 0.01° resolution |
pH Range | 0-14pH |
pH Accuracy | ±0.02pH, 0.01pH resolution |
ORP (DO) Accuracy | ±10mV, 1mV resolution |
4-20mA Output Resolution | 12 bit , 0.005mA |
Brand | Agrowtek |
---|---|
SKU | PHXMK-ORP |
Weight (lb.) | 1.0000 |
Height (in.) | |
Prop 65 | false |
Lead Time | This product ships in 2 Weeks |
Length (in.) | |
Width (in.) | |
Warranty | 1 Year |
Hazardous Material | false |
ETL Listed | No |
UL Listed | No |